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2. WSPR (amateur radio software) - Wikipedia

   en.wikipedia.org/wiki/WSPR_(amateur_radio_software)

   The program is designed for sending and receiving low-power transmissions to test propagation paths on the MF and HF bands. WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Transmissions carry a station's callsign, Maidenhead grid locator, and transmitter power in dBm.

3. Sensurround - Wikipedia

   en.wikipedia.org/wiki/Sensurround

   Sensurround pseudorandom number generator circuit on the patent, to create low frequency rumble. The original Sensurround design used for Earthquake employed a pseudorandom noise generator , designed by D. Broadus "Don" Keele, Jr., to create the low-frequency rumble, using recordings of the 1971 Sylmar earthquake as a reference. [ 3 ]

4. Low-frequency oscillation - Wikipedia

   en.wikipedia.org/wiki/Low-frequency_oscillation

   Low-frequency oscillation (LFO) is an electronic frequency that is usually below 20 Hz and creates a rhythmic pulse or sweep. This is used to modulate musical equipment such as synthesizers to create audio effects such as vibrato , tremolo and phasing .

5. Sidetone - Wikipedia

   en.wikipedia.org/wiki/Sidetone

   It is designed to mimic the tone generated by a typical radio receiver when a CW signal is converted to the intermediate frequency (IF), then mixed with the Beat frequency oscillator (BFO) frequency to generate a difference frequency, which is audible over the radio receiver loudspeaker or headphones.

6. Infrasound - Wikipedia

   en.wikipedia.org/wiki/Infrasound

   The report "A Review of Published Research on Low Frequency Noise and its Effects" [54] contains a long list of research about exposure to high-level infrasound among humans and animals. For instance, in 1972, Borredon exposed 42 young men to tones at 7.5 Hz at 130 dB for 50 minutes.

7. Download, install, or uninstall AOL Desktop Gold - AOL Help

   help.aol.com/articles/aol-desktop-downloading...

   AOL APP. News / Email / Weather / Video. GET. Mail. Mail. Help. Contact Us; ... • Windows 7 or newer • 1 GHz or faster processor • 1024 x 720 or higher screen ...

8. Signal generator - Wikipedia

   en.wikipedia.org/wiki/Signal_generator

   A signal generator is one of a class of electronic devices that generates electrical signals with set properties of amplitude, frequency, and wave shape. These generated signals are used as a stimulus for electronic measurements, typically used in designing, testing, troubleshooting, and repairing electronic or electroacoustic devices, though it often has artistic uses as well.

9. AOL Desktop - AOL Help

   help.aol.com/products/aol-software

   Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.